Command interface
M29W128GH, M29W128GL
Table 10. Standard commands, 8-bit mode
Bus operations(1)
Command
1st
2nd
3rd
4th
5th
6th
Add Data Add Data Add Data Add Data Add Data Add Data
Read/Reset
1 X F0
3 AAA AA 555 55 X F0
Manufacturer code
Device code
Auto Extended memory
Select block protection
indicator
3 AAA AA 555 55 AAA 90 (2)(3) (2)(3)
Block protection
status
Program(4)
4 AAA AA 555 55 AAA A0 PA PD
Chip Erase
6 AAA AA 555 55 AAA 80 AAA AA 555 55 AAA 10
Block Erase
6+ AAA AA 555 55 AAA 80 AAA AA 555 55 BAd 30
Erase/Program Suspend
1 X B0
Erase/Program Resume
1 X 30
Read CFI Query
1 AA 98
1. X Don’t care, PA Program Address, PD Program Data, BAd Any address in the Block. All values in the table are in
hexadecimal.
2. These cells represent Read cycles. The other cells are Write cycles.
3. The Auto Select addresses and data are given in Table 6: Read electronic signature - auto select mode - programmer
method (8-bit mode), and Table 8: Block protection - auto select mode - programmer method (8-bit mode), except for A9
that is ‘Don’t care’.
4. In Unlock Bypass, the first two unlock cycles are no more needed (see Table 12: Fast Program commands, 8-bit mode and
Table 13: Fast Program commands, 16-bit mode).
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